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Figure Caption
Fig. S2 β-catenin expression in the dorsal YSL. (A-D) YSL expression of β-catenin is not detected in 512-cell stage embryos injected with capped lacZ:glo mRNA (A,C), in comparison to mutant sqt RNA-injected embryos which show several β-catenin-positive nuclei in the YSL (yellow arrows in B,D). DAPI staining (C,D) shows all nuclei in blastoderm (red arrows) and YSL. Scale bar: 25 μm.
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